A polymetalloxane including structural units represented by formulae (1-1) and (1-2), and having a weight-average molecular weight of 30,000 or more and 2,000,000 or less;

##STR00001## wherein, M.sup.1 and M.sup.2 independently represent different metal atoms; L.sup.1 and L.sup.2 are each independently a group selected from the group consisting of an allyloxy group, an aryloxy group, and a trialkylsiloxy group; L.sup.1 and L.sup.2 may be the same or different, and at least one thereof is an allyloxy group or an aryloxy group; R.sup.1 and R.sup.2 are each independently a hydrogen atom, a C.sub.1-12 alkyl group, or a group having a metalloxane bond; m is an integer that represents the valence of the metal atom M.sup.1, and a is an integer of 1 to (m2); and n is an integer that represents the valence of the metal atom M.sup.2, and b is an integer of 1 to (n2).

A polymetalloxane including structural units represented by formulae (1-1) and (1-2), and having a weight-average molecular weight of 30,000 or more and 2,000,000 or less;

##STR00001## wherein, M.sup.1 and M.sup.2 independently represent different metal atoms; L.sup.1 and L.sup.2 are each independently a group selected from the group consisting of an allyloxy group, an aryloxy group, and a trialkylsiloxy group; L.sup.1 and L.sup.2 may be the same or different, and at least one thereof is an allyloxy group or an aryloxy group; R.sup.1 and R.sup.2 are each independently a hydrogen atom, a C.sub.1-12 alkyl group, or a group having a metalloxane bond; m is an integer that represents the valence of the metal atom M.sup.1, and a is an integer of 1 to (m2); and n is an integer that represents the valence of the metal atom M.sup.2, and b is an integer of 1 to (n2).

A method for forming an ultra-high temperature (UHT) composite structure includes dispensing a polymeric precursor with a spinneret biased at a first DC voltage; forming a plurality of nanofibers from the polymeric precursor; receiving the plurality of nanofibers with a collector biased at a second DC voltage different than the first DC voltage; and changing a direction of movement of the plurality of nanofibers between the spinneret and the collector with a plurality of magnets having a magnetic field by adjusting the magnetic field.

A method for forming an ultra-high temperature (UHT) composite structure includes dispensing a polymeric precursor with a spinneret biased at a first DC voltage; forming a plurality of nanofibers from the polymeric precursor; receiving the plurality of nanofibers with a collector biased at a second DC voltage different than the first DC voltage; and changing a direction of movement of the plurality of nanofibers between the spinneret and the collector with a plurality of magnets having a magnetic field by adjusting the magnetic field.

The present application discloses and claims a method to make a flexible ceramic fibers (Flexiramics) and polymer composites. The resulting composite has an improved mechanical strength (tensile) when compared with the Flexiramics respective the nanofibers alone. Additionally a composite has better properties than the polymer alone such as lower fire retardancy, higher thermal conductivity and lower thermal expansion. Several different polymers can be used, both thermosets and thermoplastics. Flexiramics has unique physical characteristic and the composite materials can be used for numerous industrial and laboratory applications.

The present application discloses and claims a method to make a flexible ceramic fibers (Flexiramics) and polymer composites. The resulting composite has an improved mechanical strength (tensile) when compared with the Flexiramics respective the nanofibers alone. Additionally a composite has better properties than the polymer alone such as lower fire retardancy, higher thermal conductivity and lower thermal expansion. Several different polymers can be used, both thermosets and thermoplastics. Flexiramics has unique physical characteristic and the composite materials can be used for numerous industrial and laboratory applications.

A method for manufacturing composite fiber of charred vinasse and shell includes steps of: charring a vinasse raw material at 800 to 1000 degrees Celsius to form a charred vinasse material, washing a shell raw material and charring the shell raw material at 1000 to 1400 degrees Celsius to form a charred shell material; mixing the charred vinasse material and the charred shell material in a weight ratio of 60-70:40-30 to form a mixed material, grinding the mixed material, mixing the mixed material and polyester granules in a weight ratio of 10-16:90-84, melting and granulating the mixed material and polyester granules to form primary granules; mixing and melting the primary granules and polyester granules in a weight ratio of 5-20:95-80 and granulating to form mixed granules; melting the mixed granules to spin into a composite fiber.

A method for manufacturing composite fiber of charred vinasse and shell includes steps of: charring a vinasse raw material at 800 to 1000 degrees Celsius to form a charred vinasse material, washing a shell raw material and charring the shell raw material at 1000 to 1400 degrees Celsius to form a charred shell material; mixing the charred vinasse material and the charred shell material in a weight ratio of 60-70:40-30 to form a mixed material, grinding the mixed material, mixing the mixed material and polyester granules in a weight ratio of 10-16:90-84, melting and granulating the mixed material and polyester granules to form primary granules; mixing and melting the primary granules and polyester granules in a weight ratio of 5-20:95-80 and granulating to form mixed granules; melting the mixed granules to spin into a composite fiber.

Disclosed are a member for a gas sensor, a gas sensor using the member, and a method of fabricating the same. Specifically, disclosed are a member for a gas sensor using a metal oxide nanofiber material in which nanocatalysts have been uniformly bound and functionalized using chitosans with which nanoparticle catalysts have been combined, a gas sensor using the member, and a method of fabricating the same.

Disclosed are a member for a gas sensor, a gas sensor using the member, and a method of fabricating the same. Specifically, disclosed are a member for a gas sensor using a metal oxide nanofiber material in which nanocatalysts have been uniformly bound and functionalized using chitosans with which nanoparticle catalysts have been combined, a gas sensor using the member, and a method of fabricating the same.